Step-down regulator ready for military apps

From Linear Technology Corp. comes the Military Plastic grade (MP-grade) version of the LTC3414, a high efficiency, 4MHz synchronous buck regulator using a constant frequency, current mode architecture. It can deliver up to 4A of continuous output current at voltages as low as 0.8V from a thermally enhanced TSSOP-20 package. It operates from an input voltage of 2.25V to 5.5V, making it ideal for both single cell Li-Ion, or NiMH applications, as well as more general-purpose fixed rail systems. The MP-grade version operates over a -55°C to 125°C operating junction temperature range and is guaranteed and tested across the full temperature range. The feedback voltage specification is slightly derated (±0.5 percent), but the remainder of the electrical specifications are identical to the E and I grades. They are developed for use in military and aerospace applications, which are subjected to extreme ambient temperatures. The LTC3414MPFE is available in a TSSOP-20E package. Pricing starts at $8.23 each for 1,000-piece quantities.